Liquid fertilizer composition containing color change indicator
US10029954B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | May 29, 2015 |
| Grant date | Jul 24, 2018 |
| Priority date | — |
| Expiry date | Nov 13, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC05G5/23
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A liquid fertilizer adjuvant composition is provided that includes a fertilizer, a pH buffering agent, a surfactant, and one or more color indicator that produce a first color change that indicates when an pre-selected first level of field treatment has been achieved. The composition is provided as a single solution. A second color change occurs when a pre-selected second, higher level of field treatment is required. The color change indicative of a pre-selected pH, water hardness, or a combination of both. The composition is particular well suited for inclusion of a urea fertilizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.